#280D2B

#280D2B

Color Values

HEX

#280D2B

RGB

40, 13, 43

HSL

294.0, 53.6%, 11.0%

HSV

294.0, 69.8%, 16.9%

CMYK

7.0%, 69.8%, 0.0%, 83.1%

OKLCH

0.2173 0.0659 323.5

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#280D2B

#102B0D

Analogous

#190D2B

#2B0D1F

#280D2B

Triadic

#280D2B

#2B280D

#0D2B28

Split Complementary

#280D2B

#1F2B0D

#0D2B19

Tetradic

#280D2B

#2B190D

#102B0D

#0D1F2B

Color Blindness Simulation

Original

#280D2B

Protanopia

#1C1C24

Deuteranopia

#1E2022

Tritanopia

#271E1D

Achromatopsia

#151515

CSS Usage

background-color: #280D2B;
color: #280D2B;
border-color: #280D2B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#FAF4FB
100
#F4E5F5
200
#EBC8EE
300
#DCA1E3
400
#C96ED3
500
#B63BC4
600
#922F9D
700
#75267D
800
#5B1E62
900
#431948
950
#2A102D

Contrast Checker

Text on white

17.76:1

AA Pass AAA Pass

Text on black

1.18:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026